GIgabyte GA-X58A-UD5 MOtherboard not starting up

I have a Gigabyte GA-X58A-UD5 motherboard with an Intel Core i7-950 CPU.
I also have 2 X 2GB DDR3 RAM and an Asus ATI 5570 Graphics Card.

After installing them all in a GIgabyte CASE with ION 460W psu, the computer will not boot. I presume it is mainboard as there is no monitor activity at all.

Can anyone advise what to check.

I have taken one RAM chip out and swapped slots on the board. One thing with the PC case is the PSU sits at the bottom. Therefore the ATX power cable is not long enough. I have an extension cable that comes with the case but the mainboard connector is for 2 joins. I only have one extension so have only connected one. Is this an issue?

"... I have an extension cable that comes with the case but the mainboard connector is for 2 joins. I only have one extension so have only connected one. Is this an issue? " ==> This is almost certainly the reason it's not working.

If I understand what you've done, you've connected the 24-pin ATX power but NOT the 8-pin auxiliary CPU power -- is that right? If so, that's clearly why it's not working. As leew suggested above, take the power supply out of the case and position it where you can connect all of the power leads correctly -- I suspect you'll find that everything then works fine.

Okay -- I would have though a 5570 needed auxiliary power ... but a quick check of the ATI site shows you are indeed correct. The Asus 5570 board on Newegg's site (which is what I took a quick look at before posting the above) APPEARS to have an aux power plug on the end of the card ... but it must be something else.

Hello to users to the new age of computers. There are so many products to choose from nowadays that you maybe confused to understand which product is the correct product for you. Let me explain briefly what should be the idea product for your best n…

We recently endured a series of broadcast storms that caused our ISP to shut us down for brief periods of time. After going through a multitude of tests, we determined that the issue was related to Intel NIC drivers on some new HP desktop computers …

This video demonstrates how to create an example email signature rule for a department in a company using CodeTwo Exchange Rules. The signature will be inserted beneath users' latest emails in conversations and will be displayed in users' Sent Items…